Question

why Punjab is called Punjab

Answer 1

the word punjab means The Land of Five Waters .
it referes to da rivers:Jhelum, Chenab, Ravi, Sutlej, and Beas ....punjab having five water bodies called punjab 

Answer 2

 PUNJAB MEANS--The Land of Five Waters
as Punjab have those five rivers  like :
1.)Sutlej 
2.)Jhelum 
3.)Chenab
4.)Ravi
5.)Beas

its called punjab

hope it helps!!
courtesy:fire furry